Author + information
- Daniel Davidovich,
- Orvar Jonsson,
- Jamie Pelzel,
- Mosi Bennett,
- Bradley Bart,
- Shari A. Mackedanz and
- Anne Sexter
Background: The CHAMPION trial showed a decrease in hospitalizations using the CardioMEMS HF System in patients with heart failure (HF). To our knowledge, there is no published multicenter data on the use of this device outside of a clinical trial setting.
Methods: We retrospectively collected data on patients with heart failure referred for CardioMEMS HF System implant in four different sites in Minnesota and South Dakota from January 5th 2015 to October 6th 2016. Decision regarding implantation was made by the clinician following the patient. Number of hospital admissions (total and for HF), emergency department (ED) visits, cardiology clinic visits in the year after device implant were compared to the number of encounters in the year prior to implantation. Statistical analyses were performed using SAS version 9.4. Continuous variables are shown as a mean and standard deviations. Categorical variables are shown as frequency and percent. Event counts were adjusted for variable follow-up time through use of person-days and compared via z-score. Length of stay analyses were examined via t-tests.
Results: 119 patients underwent device implant. At the time of data collection 47 patients had completed 12 month follow up, 63 at least 9 months of follow up and 76 at least 6 months of follow up (mean 246.93 days [124.44], median 298 days). Most were male (63.87% vs 36.13%) and white (86.55% white vs 9.24% black). Total number of visits showed a significant decrease post-implant across all sites (total: 2101 vs 1230 p-value = 0.0001, site 1: 1436 vs 772 p-value = <0.0001, site 2: 307 vs 245 p-value = 0.01, site 3: 245 vs 161 p-value = 0.7562, site 4: 113 vs 52 p-value = 0.0001). When divided by visit type, there was a decrease in total hospital admissions, HF admissions, and ED visits after device implantation (total hospital admissions: 336 vs 154 p-value = 0.0001, HF admissions 187 vs 36 p-value = <0.0001, ED visits 1110 vs 616 p-value = 0.0001), there was no significant difference in number of clinic visits (total: 655 vs 460 p-value = 0.539).
Conclusions: A CardioMEMS HF System, even when used outside of a clinical trial setting, can decrease heart failure exacerbations leading to emergency department visits and hospital admissions
Poster Hall, Hall C
Friday, March 17, 2017, 3:45 p.m.-4:30 p.m.
Session Title: Acute Heart Failure: Evaluating Strategies to Prevent Readmissions
Abstract Category: 13. Heart Failure and Cardiomyopathies: Clinical
Presentation Number: 1163-256
- 2017 American College of Cardiology Foundation